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Finding the Fourth Proportional to 167,129.64, 250,644.78 and 48,769.20

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Solution

The fourth proportional to 167,129.64, 250,644.78 and 48,769.20 is: 73,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,129.64 : 250,644.78 = 48,769.20 : x
  2. Step 2: Convert to fraction form
    167,129.64/250,644.78 = 48,769.20/x
  3. Step 3: Cross multiply
    167,129.64x = 250,644.78 × 48,769.20
  4. Step 4: Simplify right side
    167,129.64x = 12,223,745,404.78
  5. Step 5: Solve for x
    x = 12,223,745,404.78/167,129.64
  6. Step 6: Final answer
    x = 73,139.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.